磁性碳纳米管表面新型壬基酚印迹纳米复合材料制备及吸附性能  

Preparation and Adsorption Properties of Novel Magnetic Nonylphenol Molecularly Imprinted Nanocomposite Material Based on Multiwalled Carbon Nanotubes

作　　者：尹玉立 龙芳[1] 饶维[1] 张朝晖[1,2] 闫亮[1] 

机构地区：[1]吉首大学化学化工学院,湖南吉首416000 [2]湖南大学化学生物传感与计量国家重点实验室,长沙410082

出　　处：《应用化学》2015年第4期472-480,共9页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(21005030和21267010);吉首大学校级课题(14JDY071)资助~~

摘　　要：采用聚苯胺包覆的磁性多壁碳纳米管为载体,以壬基酚（NP）为模板分子,甲基丙烯酸（MAA）为功能单体,乙二醇二甲基丙烯酸酯（EGDMA）为交联剂制备新型磁性壬基酚印迹复合萃取材料。采用扫描电子显微镜（SEM）、红外光谱（FT-IR）和样品振动磁强计（VSM）等技术手段对该磁性印迹复合材料进行表征和分析,结果表明,在磁性碳纳米管表面成功接枝厚度为60-70 nm的印迹聚合层。采用高效液相色谱（HPLC）技术对该印迹复合材料的吸附性能进行探讨,结果表明,该磁性印迹复合材料对壬基酚具有特异性吸附性能,最大吸附量为38.46 mg/g。结合HPLC检测技术,该磁性印迹复合材料成功用于分离富集饮用水中的壬基酚。A novel magnetic nonylphenol molecularly imprinted composite extraction materials （MWNTs@ Fe3O4-MIPs） was prepared based on multiwalled carbon nanotubes（MWNTs） using nonylphenol （NP） as the template, methacrylic acid（MAA） as the functional monomer and ethylene glycol dimethacrylate （EGDMA） as the cross-linker. The MWNTs@Fe3O4-MIPs were characterized by scanning electron microscopy（SEM）, Fourier-transform infrared （FT-IR） analysis and vibrating sample magnetometer （VSM）. The results show that a thermally stable magnetic imprinted layer with the thickness of 60 - 70 nm was coated steadily on the MWNTs surface. Adsorption performance of the MWNTs@ Fe3 O4-MIPs was investigated by magnetic solid phase extraction （ M-SPE ） and high-performance liquid chromatography （ HPLC ） technology. The results indicate that the MWNTs@ Fe3O4-MIPs possessed higher selectivity towards nonylphenol（NP） with the maximum adsorption capacity of 38.46 mg/g. This magnetic molecularly imprinted composite material combining with HPLC technology is successfully applied to the separation and the enrichment of nonylphenol （NP） in environmental water samples.

关 键 词：分子印迹 磁性碳纳米管 壬基酚 磁固相萃取 

分 类 号：O652.6[理学—分析化学]